Necticut



R. 3. BROWN.

METAL WORKING MACHINE.

APPLICATION FILED OCT. 25, I918- 1,3 1 1 ,3 14. Patented July 29, 1919.

5 SHEETS-SHEET l- R. s. aaowm METAL WORKING MACHINE.

APPLICATION FILED OCT. 25, 191B.

Patented July 29, 1919.

6 SHEETS-"SHEET 2.

' J'hvhfar R 8. BROWN. METAL WORKING MACHINE.

APPLICATION FILED OCT'. 25, 1918.

Patented July 29, 1919.

B SHEETS-SHEET 3.

H. 8. BROWN. METAL WORKING MACHINE I APPLICATION FILED OCT. 25. I9I 8 Patented J illy 29, 1919.

6 SHEETS-SHEET 4- R. .8 BROWN.

METAL WORKING MACHINE.

APPLICATION FILED OCT. 25. 1918.

Patented July 29, 1919.

6 SHEETSSHEET 5.

R. 8. BROWN. METAL WORKING MACHIN E. APPLICATION FILED OCT. 25. I918.

Patented July 29, 1919.

6 SHEETS-SHEET 6.

ROBERT S. BROWN, F BRITAIN, CONNECTICUT, ASSIGNOR TO THE NEW BRITAIN MACHINE COMPANY, OF. NEW BRITAIN, CONNECTICUT, A CORPORATION OF CON- NEGTIGUT.

METAL-WORKING MACHINE.

Specification of Letters Patent. Patented July 29, 1919.

Application filed October 25, 1918. Serial No. 259,636.

To all whom it may concern:

" Beit known that I, ROBERT S. BRO a citizen of the United States, residing at New Britain, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements "in Metal- 'Working Machines, of which tlre following is a specification. I

This invention relates to metalworking.

.0 machines. Some of'the features ofthe invention, however, can with advantage be employed in connection with machines ,of other kinds in view of which circumstance it is clear that have selected the title given merely as a matter of convenience. In that form of-embodiment of the invention which I have selected for illustration in the drawings accompanying and forming part of the present specification the invention is shown as. incorporated in what. is known as a screw machine. This form of structure I will set forth sufliciently in the following description to enable those skilled in the art.

to-practice the invention. I am in nowise restricted to this partlcular, dlsclosure; I

may depart therefrom in several respects within the scope of the invention defined by the claims succeeding said description. I might state that one of the. fundamental purposes I have in view is the provision of effective, easily operable and readily accessible means by which the action of one or more parts can. be precisely controlled by the use of proper fluid, such as compressed air. This is merely one of several agents any of which are satisfactory but I have obtained properresults -by the use of compressed air.

Referring to said drawingsz' p 40 Figure 1 is a side elevation of a machine involving the invention.-

Fig. 2-is' a similar'view of one end of the same, the head or left end as shown in Fig. l. Fig. 3 is a top plan viewof the parts appearingin said Fig. 2. a

Fig. 4 is a vertical, central section of a motor.

Fig. 5 is a cross section of the work-carrying spindles, as looking toward the foot end of the machine.

Fig. 6 isa horizontal sectional top plan view of the'work-carrier and spindles.

Fig. 7 is a cross section on the line 77 of Fig. 6.

"casing as 6.

F 1g. 8 is a horizontal sectional detail view of the parts appearingin said Fig. 7.

Fig. 9 is a side elevation of the parts appearlng at the foot end of the machine. i

Fig. 10 is a top plan view of the structure shown in said Fig. 9.

Like characters refer to like parts throughout the several views which are on' dlfferent scales.

The different parts of the machine may be supported in any convenient manner.

For this purpose (Fig. l for instance) I have shown the base or bed 2 and the frame members as 3 and 4 rising from and suitably fastened-to said base member; usually these frame members are bolted to the base or bed'2. As a matter of fact I have shown :the invention as incorporated in a machine 'of the. same general type as that disclosed in Letters Patent No. 1,177,827 of April '4, 1916, andto which reference may be had .for a more definite and full understanding of certain parts not herein described in detail astheyf'orm in themselves no part of the invention. I will, however, set forth certain features which are not in themselves new with me-merely to indicate the many advantages of the invention.

As will be clear the machine shown is of the multiple-spindle type and involves in its makeup two carriers, one for the work and the other for a tool or tools. In the present instance one of thesecarriers is rotary and the other is reciprocatory. As shown the work-earner is rotarywhile the tool-carrier as reciprocatory.

A work-carrier such as meets my conditions is that denoted in a general way by 5 (Figs. 1,2, 3 and 6) mounted in a suitable These may be as fully set forth in the Letters Patent already identi- 'fied. This work-carrier 5 isgiven. an intermittent or'step by step rotary or indexing movement. There extend entirely through said carrier 5 the spindles 7 of which there may. be any convenient number. As a matter of fact there may be instances where there is but a single spindle and its work or other holder. Extending through the workcarrier or cylinder5 is a rotary shaft 8 which as in said Letters Patent extends practically the length of the machine, the shaft being "continuously ,rotative at least during the action of the machine. Fastened to the head end of said shaft 8 is the pinion 9 the teeth of which are in mesh with the annular series of pinions l loosely associated with the respective work-carrying spindles scribe it.

7, the pinions 10 being arranged in annular order around the operating pinion 9; The shaft 8 alsohas-rigidly fastened. to it the pinion 11 in mesh with an annular series of pinions 12 loosely associated with the re spective spindles 7 allthisbei'ng shown fully in Fig. 6. The pinions 10 and 12 may be connected to their spindles for rotation therewith through the intervention of clutchmembers as 13 and 14 respectively which are actuated by operating members as 15 (Fig. 3. for instance)'. In Figs} and 6 allthe clutch members 14:v arejisposed so as to couple the forward sets of pinions 12 to the work-carrying spindles 7 and thus cause the rotation of said spindles.

It will be clear that if an operating member as 15 be moved to a neutral position it will cause-the un, clutching of the corresponding pinion 12 and thus the stopping in motion of the reason it is not necessary to further de- Each of the spindles 7 is provided at its inner. end with a work-holder, such as a chuck 16 whichwvhen closed securely holds including a spool 19. I

the work while being operated upon, and when opened'permits the removal of the work. Through the spindles 7 extend-the draw tubes. 17 provided substantially .as

shown in said. p'ate'ntwith means for causing the opening and closing of the respect ve chucks 16. T1 he spindles 7 loosely-carry the pperating'devices 18 by which said draw tubes 17 are moved. endwise to cause theopening and closing of the respective chucks, each-operatingdcvice as will be understood It will be understood that during the normal action of themachine, the work-carrier oncvlinder 5 rotates-and that the work-carrying spindles 7 also-rotate. I may, however, at the will of the attendant of the machine stop the rotation of a spindle at a'predetermined pointand at practically the same compressed air.

time or a little later may open a chuck to free a piece of work or-accompllsh some otherlike function. As I have already 'observed these actions are secured through the intervention of fluid and although it may be of any desired character I prefer that it be The base 2 sustains what might be considered as a motor which as will be inferred is pneumatically-operated although this is' not always necessary. Such a motor as 19 (Figs;

1, 2, and 4) includes in its structure a cylincircumferentially packed. "There are tapped into the upper and lower ends of said cylinder 20 of the supply pipes 22 and 23 for compressed air, the delivery ends of said pipes being fitted as bythreading into ports or der as in which is slidable the piston 21 i passages as 24 and 25' by which air is ad- 'mitted in alternation to the end portions of the cylinder. As shown the two pipes or ducts 22 and 23 lead from the box or casing 26 sustained rigidly'by the frame member?) (Fig'. L) so th'at the'valve in said box or casing. is within easy access of the attendant of the machine. The valve 27 is of some familiar three-way. type so that'when operated as by the handle 28 the compressed air can .be delivered into the desired one of thetwo supply pipes 22 and 23. The compressed air a i The stem 31 of the piston 21 extends upwardly through a gland in the upper head of the cylinder and has preferably a rigid connection with a cam member or plate as 32 supported as shown for vertical sliding movement upon the framemember 3 above the cylinder as represented best in Fig. 2. It will of course'be clear that upon manipulation of the valve 27 to'cause air to enter the upper end of the cylinder 20 by way of the pipe 22 the piston 21 and hence the stem or rod 21 and hence the cam 'member 32 are lowered, ,the cam member functioning as I will hereinafter set forth.-' When the piston is in its lowered position as are'the parts con nected thereivitln; and on the admission of air into the cylinder by Way of the pipe 23-,

the piston and associated parts will be caused togaise or ascend to reverse the other action.

' The cam member or plate 32 as illustrated has through it the cam slots 33 and 34 which respectively receive studs or antif'rition rollers as-35'and 36 connected to the rods 37 and 38 supported as shown for horizontal endwise reciprocation by-the upper portion of the frame member 3 as shown in Figs, 2 and 3. The rod 37 is the agent for. efiec-ting through coiiperatin-g meansthe stoppage of a spindle 7 on the front orattendants sideofthe machine while the rod 38 is the agent for accomplishing through intervening means the opening of the chuck 16. associated with the spindle thus stopped, these actions preferably occurring in sequence. That is to say 'the predetermined spindle is first stopped in its rotationfland then the, chuck carried thereby is opened in view of which circumstance the work or equivalent carried by said chu ck' 1O tions, however, extending opposite y to each can be readily and'easily removed. The slot 33 it will be seen has a steep lower or efi'ective portion which merges into an inefieetive upper portion, the latter beingparallel with I longer'branch portion of the slot 34is the grooves of the operating members 15 as the effective part thereof being oblique to said axis while its lower and shorter branch 1s parallel to said axis, the two ob ique porother.

It will be assumed that the cam member or plate 32 is in its advanced position which of course is up at which time the piston 21 is against the upper head of its cylinder 20, and that it is desired to stop the rotation of a spindle .7 and then to open the chuck 16 car ried thereby. In this case the attendant of the machine will operate the valve 27 in the manner set forth, to cause compressed air to enter the upper end of the cylinder, by way of the pipe 22 and thus lower the piston and as a result the cam member or plate 32', the latter 'on such action causing as I will later explain the successive thrust of the rods 37 and 38 to the left which is their retractive movement, both of them having been shown in theiradvanced positions in Fig. 2. The rod 37 is provided between its endswith a finger 38 adapted to enter'the peripheral latter revolve. Thus when the rod 37 is retract-edits finger 38 will move the operating member 15 with which it is for the time being cooperative, into position to arrest the rotation of the spindle 7 carrying said operating member.- Subsequently, the finger 39 having 'in the meantime entered the peripheral groove of the operating device 18, effects on the corresponding movement of therod 38 the longitudinal movement of the draw tube 17 coactive with said operating device and ,the resultant opening of. the chuck carried by saidspindle 7.

; The frame member 4 supports on its upper side a tool carrier as 40 which as in said Letters Patent is in the form of a slide reciprocatory by the cam drum 41. The stoppage in motion of this cam ,drum 41 will of course cause the stoppage in movement of the. tool carrier or slide 40. The main shaft 42- is adapted to be connected operatively with the cam drum 41 by a clutch such as that denoted in a general way by 44 (Fig. 9)

said clutch in said view being shown as bestoppage of motion of the cam drum 41 will be the result accompanied of course by the non movement of the slide 40. I might note at this point that it is possible for the attendant of the machine when he desires to move the shiftable member 45 of the clutch to said neutral position by bringing the lever 46 to an upright or practically upright position. I provide, however, automatic means for accomplishing this particular result when the desired spindle of the group already described, is stopped and its chuck opened, to remove the work so that as a consequence it will not b possible at such'time to operate the tool carrier or slide 40.

It will be understood that indexing mechanism denoted in a general way by is carried 'by the shaft 71 driven by the cam drum 41 so that when the cam-drum is stopped in the manner notedfsaid shaft 71 is also stopped, the'consequence being that at such time, the work-carrier 5 cannot be indexed.

The cam member or late 32 has in addi tion to the two descri ed cam portions or slots, a third cam portion, also shown as a slot 47 having'a lower effective and an upper ineffective-portion, to receive the stud or or anti-friction roller 48 on the horizontallyreciprocative rod 49 supported and guided by the frame member 3 as best illustrated in Fig.2. This rod is shown provided with rack teeth 50 in mesh with the teeth of the sector 51 fixed to the shaft 52 on the frame of the machine. Said shaft also rigidly carries a second segment 53 the teeth of which mesh with those of the bar 54 reciprocatim on the framing.

The'slide 40 has fixed thereto a bracket as .55 (Figs. 9 and 10) the overhanging portion the rod 56. ,It will be clear that on ,each

' backward movement normally of the slide 40 the nose piece 59 engages the beveled portion or face. 58 of said actuator which results in the lateral or outward movement of .the rod 56 as shown by dotted lines in Fig.

10 so that said rod cannot encounter the clutch lever 46 when in said dotted line or ineffective relation.

The cam slot 47 to which]. have referred, has a lower efi'ective portion which is oblique to the longitudinal axis of the cam member or plate 32 and an upper ineffective portion which is as will be clear, parallel to said axis. It will be assumed that the cam member 32 has been retracted or moved downmovement of said cam member the lower the range of movement of the rod 56 so that the latter during the backward movement of the slide 40, can remain in its operative position. In view of thiscircumstance the free end vofjthe'. rod or bar on such back: ward movement will strike the lever 43 and bring the same to an. upright or vertical position, the lever in turn moving the clutch member 45 to neutral and stopping thereby further movement of-the slide 40.

ItQwill be clear that the operative move} ment or retraction of the cam member or plate 32 is in a downward. directionand duringthis motion-one of the spindles 7. is stopped and its work-holder is opened. At

the proper point in the'movementof the tool-carrieror-slide it is stopped. It will be evident that on the upward movement of the cam member the actions set forthare reversed in view of which circumstance the parts are thus restored to their initial conditions andthemachine started by the operation of the hand lever 46. Both the retractiveand advancing movements of the cam member 32 are accomplished through the intervention of the attendant'of the machine. When said .cam member is in its normal position as shownin Fig. 2, the normal action of the machine is the conse .quence' f I provide means by which the Work is yieldingly held in the chucks 16 as I will now -explain. It will be remembered that the opening of these chucks 16 is secured through the action of "the draw tubes 17. The draw tubes 17 loosely carryoperating devices 18 the action of which in turn is obtained by the spools'19' ,loose on the respective spindles. Each draw tube 17 has fixed to it the sleeve 65 (Figs. 6, 7 and 8). Each spindle in turn is-surrounded by the plate or disk 66 rigid therewith.' The bodies of the operating devices 18 pivotally-sup port levers as 66 of angular form,-- the longer branches of the levers being operable by the spools 19. Between the bodies of the operating devices 18 and the relatively stationary plates or disks 66 are interposed coiled springs as 67 in view of which it will be clear that the chucks when closed through the action of the spools will yieldingly grip the work. 7

What I claim is:

1. In a machine of the class described, the

combination of a rotary carrier provided with a series of rotary spindles each furnished with a holder,'and fluid governed means to be actuated at will and supported the stoppage in rotation of a desired spindle and subsequently for causing the action of the holder carried by the spindle while it is thus stopped, .to free the part held,

thereby. .l 3. In a machine of the class described, tlie combination of a rotary carrier provided with. a series of rotary spindles each provided with a work holder, a reciprocatory carrier provided with means to act on the work carried by the respective holders as the rotary carrier turns, and fluid governed tne stoppage in rotation of a desired spindle and for also causing the action of the holder means to be'actuated at will and supported independently of the spindles,'for eflecting the stoppage of a spindle and also the movement of the reciprocatory carrier.

4. In a machine of the class described, the combination of a rotary carrier provided with a series of'rotary spindles each pro-. vided with a work-holder, 'a reciprocatory carrier'provided with means to act on the work,carried by the respective holders on the rotary carrier, and fluid-governed means to be'actuatfd at will" and supported independently of the spindles, for effecting the stoppage of a spindle andsubsequently the operation of its holder to free-the part carrled thereby, and for also arresting the movement of the reciprocatory carrier..

5. In a machine of the class described, the. combination of a rotary carrier provided with a series of rotaryspindles each provided with a holder, and fluid-governed means to be actuated at will for efiecting f the stoppage of a predetermined spindle of the group and while the spindle is thus stopped performing an independent action on a part carried thereby.

6. In a machine of the class described, the combination of a rotary carrier provided with a series .of rotary spindles each -pro-. vided with a holder, and fluid governed means to be actuated atwill, for effecting the stoppage of 'a' predetermined spindle of the group and for subsequently causing the operation of the holder associated with said spindle while said spindle is thus stopped to free the part heldin said holder.

7 In a machine of the class described, the combination of a rotary spindle provided with a holder, a cam, fluid-governed means supported independently of the spindle and to be actuatedat will, to effect the movement of said cam, and means actuated loy'said cam on its said movement for stopping the rotation of the spindle and for subsequently causing the holder to free the part held thereby;

the movement of said cam, and means ac" tuate d by said cam on its said movement for stopping the rotation of a predetermined spindle and for subsequently causing the holder to free the part held thereby.

9. In a machine of theclass described, the

. combination of a rotary carrier provided .with a series of rotary spindles each having a work-holder, a reciprooatory carrier provided with means to hold a tool to operate a 'on the work asthe rotary carrierturns, a cam, fluid-governed means, supported independently of the rotary carrier and its spin dles and to be actuated at wil1,for effecting the movement of said cam, and means actuatedby said cam on its said movement, for stopping the rotation of a predetermined spindle, for subsequently causing the holder thereof to free the part held thereby and rocatory carrier.

' 10. In a. machine of the class described, the combination of a; rotary carrier provided with a series of rotary spindles each having a work-holder, a reciprocatory carrierspro- ,for also stopping the movement ofthe recip;

j vided with means for holdingja tool to operate on the work supported by said holders, a ca-m'supported by the framework of the machine, fluid-governed means actuated at will for causing opposite movement of the cam, and a plurality of rods reciprocatory by the cam, one of therods having means 1 associated therewith for stopping a predetermined spindle and another of said rods having means for subsequently opening the holder of the spindle which is thus stopped.

11. In a machine of the class described, the

with a series of rotary spindles each having a work-holder, a reciprocatory carrier provided with means for holding a tool to operate on the work supported by said holders, a cam supported by the framework of the machine, fluid-governed means actuated at will, for causing opposite movements of the cam, and three rods reciprocatory by the cam, one of the rods havingineans associated therewith, for stopping a predetermined spindle, another having means for subsequently opening the holder of the spindle thus stopped, and the third having means for efiecting the stoppage in movement of the reciprocatory carrier.

12. In a machine of the class described, the combination of a rotary carrier provided with a series of rotary spindles each pro-- vided with a chuck, means for yieldingly closing the chucks and fluid-operated means for opening a chuck at will when the carrier is in a predetermined position/ 13. In a machine of the class described, thecombination of a rotary carrier provided with a series of rotary spindles each furnished with a holder, and fluid operated means supported independently of the spindles and their holders, for closing the holder with a series of rotary spindles each furnished with a holder, and -fluid governed means to be actuated at will, for closing each holder of a spindle and then starting the rotation of the spindle provided with the holder thus started, at a predetermined point in the rotation of the carrier.

In testimony whereof I affix my signature in the presence of two witnesses.

ROBERT S. BROWN. Witnesses:

' O'r'ro HILTON,

HEATH SUTHERLAND.

.80 combination of a rotary carrier provided. 

